This means the emissions from van, SUV, & half-ton vehicles in 2015 was almost three times what they were in 1990 while emissions from cars remained about the same. (Note the drop from 1990 to 1991. Car emissions rose by 27% from 1991 to 2015.)

We’ve included semi-trailer trucks in this chart (Heavy-Duty Diesel + Heavy-Duty Gasoline Trucks) to give a sense of overall changes in road use over this time.